Virat Kohli has been in the thick of things ever since the series between India and Australia began in Pune with many critics talking about his nature and how he would react to instigation.

If there was any hope of things simmering down between India skipper Virat Kohli and the Australians at the end of the four-Test series, those hopes seem to be futile with Kohli making it clear that Australians were no longer his friends after the manner in which they went after him during the series. This is an issue that could well be kept on simmer till the main characters of the plot face off again for the Indian Premier League (IPL), beginning from April 5.

Asked after the end of the Dharamsala Test if he still considered Steve Smith's men his friends off the field as he had said at the start of the series, Kohli gave a very definite answer.

"No, it has changed for sure. I thought that was the case but it has changed for sure. As I said in the heat of the battle, you want to be competitive but yeah I have been proven wrong. The thing I said before the first Test, I have certainly been proven wrong and you won't hear me say that ever again," Kohli said.

Kohli has often said he was not bothered by what the Australian players or media had said about him, but it seems he was more affected than he would like to admit.

He was a constant target, especially after the Bengaluru 'brain fade' issue and was in the thick of things with former players questioning his attitude and intentions and the Australian media comparing him to United States President Donald Trump among other things.

"Some people want to create some spice sitting at some part of the world. They don't confront such situations themselves. The easiest thing to do is to just sit at home and write a blog or speak on the mike but to go out there and bowl and bat is different," he said.

Kohli said he was thoroughly enjoying the responsibility of leading a motivated side.

"I like taking responsibility, every game that I play for India is an opportunity to do something special with my skills. I like getting involved in the game. The workload is something that needs to be kept in mind in future but right now when the body is responding well I am fine," he said.

"It's been unbelievable. This is our best series win so far. The way we bounced back from World No.7 to No.1 has been outstanding achievement and I am proud as a captain.

"I thought (the series against) England was intense, but the way Australia gave us a fight it was amazing on their part but our guys kept bouncing back. We showed true character and maturity. The guys handled themselves well," he added.

He lauded stand-in skipper Ajinkya Rahane for the win in the fourth Test. "Ajinkya led the team really well. It was very pleasing to see that from the outside."

Speaking about his recovery from the shoulder niggle, Kohli said he will be back to full fitness in a few weeks.

"It's still a few weeks to go till I can be 100 per cent on the field. You have to take it in your stride and move forward," he said.